Long description for example showing caption above a table

This diagram shows the relationship between a table and a
caption above it and how they behave in the visual formatting
model.

The diagram shows a table (drawn in blue) and a caption
(drawn in red) above it.

The table is a 5x3 grid of empty cells surrounded by a labeled
margin area. The caption contains a line of (insignificant) text and
is surrounded by a labeled margin area. The top margins of the table
and the caption collapse.